Seals

Trelleborg Sealing Solutions uses digital technology to support its polymer-engineered products, with applications and online tools.

Trelleborg apps are operational on PC, Android and iOS systems. The online tools have received one million downloads, and in response to their success, Trelleborg now employs a team of app developers in India to develop up to date, practical programs.

Hallite Seals Americas, Inc., Wixom, Mich. announced today the successful development of a new test procedure for assessing the amount of dirt and dust that enters a typical hydraulic system through the rod wiper. Developed in cooperation with Milwaukee School of Engineering’s (MSOE) Fluid Power Institute™, the test breaks new ground because it features a novel methodology for measuring dry particles attributed to being a major cause of hydraulic system inefficiency, degradation and failure. It fills a critical need within the cylinder manufacturing industry....More

Effective high-pressure sealing requires a material or a combination of materials with sufficient tear strength, hardness, and modulus to prevent extrusion through the gap. At pressures of 5000 to 7000 psi, the strongest elastomeric materials in standard seal configurations resist the extrusion without reinforcement. At higher pressures, the elastomeric sealing element must be backed by a higher modulus and harder material. Various, more-or-less standard, backup configurations have demonstrated their effectiveness over many years....More

The Turcon Roto Glyd Ring II seal offers a high pressure-velocity (PV) rating that’s 140% higher than its predecessor. It consists of a permanently bonded elastomer energizer and PTFE-based seal ring that forms a one-piece seal to prevents the seal ring from spinning with the shaft against the energizer....More

Trelleborg Sealing Solutions uses digital technology to support its polymer-engineered products, with applications and online tools.
Trelleborg apps are operational on PC, Android and iOS systems. The online tools have received one million downloads, and in response to their success, Trelleborg now employs a team of app developers in India to develop up to date, practical programs....More

An original-equipment manufacturer of custom automation equipment for the food-processing industry built a large pallet-transfer system to shuttle bins of poultry from a defeathering line to a final processing line. The poultry was placed into bins, 10 at a time, and the bins were stacked 10 high. The 10-high pallet-transfer system consisted of a floor-mounted rack-and-pinion drive system with a gerotor motor driving the pinion to move the pallets. The pallets were then shuttled to one of three locations to be off-loaded for final processing....More

Compared to other components in a fluid-power system, the low cost of seals doesn’t earn them much respect. However, rod seals perform one of the toughest jobs in a fluid-power system. They must squeeze the piston rod tight enough to prevent pressurized fluid from leaking out of the cylinder. But if they squeeze too hard, they’ll wear prematurely and maybe even damage the piston rod surface. Not only that, seals must prevent leakage at high pressure, low pressure, varying temperatures, a wide range of rod speeds, and when systems sit idle for days on end....More

Installed in a specially constructed well, an 18-ton, 260‑kW floating-mount rod seal test bench is located at Trelleborg’s research and development center in Stuttgart, Germany. The machine is capable of simulating the patterns of movements and stresses faced by hydraulic rod seals in some of the most-demanding rod-seal applications, such as aircraft landing gear, injection-molding machines, and mining excavators....More